[RFC PATCH 12/36] platform: arm64: Move ec devices to an ec subdirectory

Jonathan Cameron Jonathan.Cameron at huawei.com
Mon Jul 21 09:32:02 PDT 2025


On Fri, 11 Jul 2025 18:36:24 +0000
James Morse <james.morse at arm.com> wrote:

> commit 363c8aea257 "platform: Add ARM64 platform directory" added a
> subdirectory for arm64 platform devices, but claims that all such
> devices must be 'EC like'.
> 
> The arm64 MPAM driver manages an MMIO interface that appears in memory
> controllers, caches, IOMMU and connection points on the interconnect.
> It doesn't fit into any existing subsystem.
> 
> It would be convenient to use this subdirectory for drivers for other
> arm64 platform devices which aren't closely coupled to the architecture
> code and don't fit into any existing subsystem.
> 
> Move the existing code and maintainer entries to be under
> drivers/platform/arm64/ec. The MPAM driver will be added under
> drivers/platform/arm64/mpam.
> 
> Signed-off-by: James Morse <james.morse at arm.com>


> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 4bac4ea21b64..bea01d413666 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3549,15 +3549,15 @@ S:	Maintained
>  F:	arch/arm64/boot/Makefile
>  F:	scripts/make_fit.py
>  
> -ARM64 PLATFORM DRIVERS
> -M:	Hans de Goede <hansg at kernel.org>
> +ARM64 EC PLATFORM DRIVERS
> +M:	Hans de Goede <hdegoede at redhat.com>

Smells like a rebase error as Hans' email address chagned
to the kernel.org one in the 6.16 cycle.

>  M:	Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
>  R:	Bryan O'Donoghue <bryan.odonoghue at linaro.org>
>  L:	platform-driver-x86 at vger.kernel.org
>  S:	Maintained
>  Q:	https://patchwork.kernel.org/project/platform-driver-x86/list/
>  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
> -F:	drivers/platform/arm64/
> +F:	drivers/platform/arm64/ec

Other than that looks sensible to me but obviously needs tags from Hans or Ilpo.

Jonathan





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